RocketChat/Rocket.Chat

import type { IRoom } from '@rocket.chat/core-typings';
import type { SelectOption } from '@rocket.chat/fuselage';
import { Box, Icon, TextInput, Select, Throbber, ButtonGroup, Button } from '@rocket.chat/fuselage';
import { useMutableCallback, useAutoFocus, useDebouncedCallback } from '@rocket.chat/fuselage-hooks';
import { useTranslation } from '@rocket.chat/ui-contexts';
import type { ChangeEvent, Dispatch, SetStateAction, SyntheticEvent } from 'react';
import React, { useMemo } from 'react';
import { Virtuoso } from 'react-virtuoso';

import {
    ContextualbarHeader,
    ContextualbarIcon,
    ContextualbarTitle,
    ContextualbarClose,
    ContextualbarContent,
    ContextualbarFooter,
    ContextualbarEmptyContent,
    ContextualbarSection,
} from '../../../../components/Contextualbar';
import { VirtuosoScrollbars } from '../../../../components/CustomScrollbars';
import InfiniteListAnchor from '../../../../components/InfiniteListAnchor';
import TeamsChannelItem from './TeamsChannelItem';

type TeamsChannelsProps = {
    loading: boolean;
    channels: IRoom[];
    mainRoom: IRoom;
    text: string;
    type: 'all' | 'autoJoin';
    setType: Dispatch<SetStateAction<'all' | 'autoJoin'>>;
    setText: (e: ChangeEvent<HTMLInputElement>) => void;
    onClickClose: () => void;
    onClickAddExisting: false | ((e: SyntheticEvent) => void);
    onClickCreateNew: false | ((e: SyntheticEvent) => void);
    total: number;
    loadMoreItems: (start: number, end: number) => void;
    onClickView: (room: IRoom) => void;
    reload: () => void;
};

const TeamsChannels = ({
    loading,
    channels = [],
    mainRoom,
    text,
    type,
    setText,
    setType,
    onClickClose,
    onClickAddExisting,
    onClickCreateNew,
    total,
    loadMoreItems,
    onClickView,
    reload,
}: TeamsChannelsProps) => {
    const t = useTranslation();
    const inputRef = useAutoFocus<HTMLInputElement>(true);

    const options: SelectOption[] = useMemo(
        () => [
            ['all', t('All')],
            ['autoJoin', t('Team_Auto-join')],
        ],
        [t],
    );

    const lm = useMutableCallback((start) => !loading && loadMoreItems(start, Math.min(50, total - start)));

    const loadMoreChannels = useDebouncedCallback(
        () => {
            if (channels.length >= total) {
                return;
            }

            lm(channels.length);
        },
        300,
        [lm, channels],
    );

    return (
        <>
            <ContextualbarHeader>
                <ContextualbarIcon name='hash' />
                <ContextualbarTitle>{t('Team_Channels')}</ContextualbarTitle>
                {onClickClose && <ContextualbarClose onClick={onClickClose} />}
            </ContextualbarHeader>
            <ContextualbarSection>
                <TextInput placeholder={t('Search')} value={text} ref={inputRef} onChange={setText} addon={<Icon name='magnifier' size='x20' />} />
                <Box w='x144' mis={8}>
                    <Select onChange={(val) => setType(val as 'all' | 'autoJoin')} value={type} options={options} />
                </Box>
            </ContextualbarSection>
            <ContextualbarContent p={12}>
                {loading && (
                    <Box pi={24} pb={12}>
                        <Throbber size='x12' />
                    </Box>
                )}
                {!loading && channels.length === 0 && <ContextualbarEmptyContent title={t('No_channels_in_team')} />}
                {!loading && channels.length > 0 && (
                    <>
                        <Box pi={18} pb={12}>
                            <Box is='span' color='hint' fontScale='p2'>
                                {t('Showing')}: {channels.length}
                            </Box>

                            <Box is='span' color='hint' fontScale='p2' mis={8}>
                                {t('Total')}: {total}
                            </Box>
                        </Box>
                        <Box w='full' h='full' role='list' overflow='hidden' flexShrink={1}>
                            <Virtuoso
                                totalCount={total}
                                data={channels}
                                // eslint-disable-next-line react/no-multi-comp
                                components={{ Scroller: VirtuosoScrollbars, Footer: () => <InfiniteListAnchor loadMore={loadMoreChannels} /> }}
                                itemContent={(index, data) => (
                                    <TeamsChannelItem onClickView={onClickView} room={data} mainRoom={mainRoom} reload={reload} key={index} />
                                )}
                            />
                        </Box>
                    </>
                )}
            </ContextualbarContent>
            {(onClickAddExisting || onClickCreateNew) && (
                <ContextualbarFooter>
                    <ButtonGroup stretch>
                        {onClickAddExisting && (
                            <Button onClick={onClickAddExisting} width='50%'>
                                {t('Team_Add_existing')}
                            </Button>
                        )}
                        {onClickCreateNew && (
                            <Button onClick={onClickCreateNew} width='50%'>
                                {t('Create_new')}
                            </Button>
                        )}
                    </ButtonGroup>
                </ContextualbarFooter>
            )}
        </>
    );
};

export default TeamsChannels;